126 103. SELAGINELLA. A 1 . MONOSTELICAE. a*. CAULESCENTES. 



'. Lateral leaves of main rachis au- 



ricled on the upper side at the base. 



(77) S. nutans. 



S'.8'. Lateral leaves of main rachis not 

 auricled on the upper side at the 

 base. (82) S. frondosa. 



&'.&'. Intermedial leaves blunt or acute, at best acuminate. 

 O Branchlets to 2 mm. broad. 



V Lateral leaves of secondary rachises truncate, 

 rounded or cuneate at the base. 



(93) S. Brausei. 



VV Lateral leaves of secondary rachises, at 

 least the lower, cordate or semicordate at 

 the base. 



D Intermedial leaves entire or subentire. 

 (94) S. cupressina. 



DD Intermedial leaves distinctly denticulate 

 to ciliate. (95) S. leytensis. 



O O Branchlets at least 2 mm. broad. 



A Lateral leaves distinctly spuriously veined. 



(96) S. flabelloides. 

 A A Lateral leaves not or hardly spuriously 



veined. 



X Branchlets 2 3 mm. broad. 



(82) S. frondosa. 



XX Branchlets 3 5 mm. or more broad. 

 + Intermedial leaves entire or den- 

 ticulate at the base. 



(97) S. pentagona. 

 + + Intermedial leaves more or less 



ciliate or ciliolate at the base. 



(98) S. suffruticosa. 



(74) . I'resliaiia, Spring, MOIL, II, 161 ; S. pennula, Spring, 

 Bk., Fern All., 95, p. p. 



Shoots erect, 30 60 cm. long, the lower part simple, square or soon 

 terete, firm, sparingly foliate, the upper part deltoid and decompound; 



